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Bulk Density Decision Tree

Bulk Density Decision Tree. Is this an Oi or Oe horizon? Does it have free water present? Estimate Db Ring. Is this an Oa or a mineral surface horizon? Is it >= 5 cm thick? Does it have >10% coarse fragments? Does it have free water present? Estimate Db in 0-5 cm layer

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Bulk Density Decision Tree

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  1. Bulk Density Decision Tree

  2. Is this an Oi or Oe horizon? • Does it have free water present? • Estimate Db • Ring

  3. Is this an Oa or a mineral surface horizon? • Is it >= 5 cm thick? • Does it have >10% coarse fragments? • Does it have free water present? • Estimate Db in 0-5 cm layer • Compliant cavity on 0-5 cm • Scoop, 0-5 cm

  4. Is this an Oa or a mineral surface horizon? • Is the total horizon thickness >10 cm • Does it have >10% coarse fragments? • Does it have free water present? • Estimate Db in 5-bottom cm of horizon • Compliant cavity in 5-bottom cm of horizon • Core in 5-bottom cm of horizon

  5. Is this an Oa or a mineral surface horizon? • Is the total horizon thickness >7 cm • Does it have >10% coarse fragments? • Does it have free water present? • Estimate Db in 5-bottom cm of horizon • Compliant cavity in 5-bottom cm of horizon • Scoop in 5-bottom cm of horizon

  6. Is this a subsurface horizon? • Is the horizon >= 5 cm thick? • Does it have >10% coarse fragments? • Does it have free water present? • Estimate Db • Compliant cavity • Core

  7. Is this a subsurface horizon? • Is the horizon >= 3 cm thick? • Does it have >10% coarse fragments? • Does it have free water present? • Estimate Db • Compliant cavity • Scoop • Combine with an appropriate adjoining horizon for sampling

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